CN107257600B - Switching device compatible with single-live wire or zero-live wire access and detection circuit - Google Patents
Switching device compatible with single-live wire or zero-live wire access and detection circuit Download PDFInfo
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- CN107257600B CN107257600B CN201710448606.5A CN201710448606A CN107257600B CN 107257600 B CN107257600 B CN 107257600B CN 201710448606 A CN201710448606 A CN 201710448606A CN 107257600 B CN107257600 B CN 107257600B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
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Abstract
The invention discloses a switching device and a detection circuit which can be compatible with single live wire or zero live wire access, and the switching device comprises an on-state power taking circuit, an off-state power taking circuit, an energy storage component and a switching component, wherein the live wire is connected with the on-state power taking circuit, the on-state power taking circuit is respectively connected with the switching component and the energy storage component, the load wire is connected with the switching component, and the live wire, the load wire and the zero wire are respectively connected with the off-state power taking circuit, and the off-state power taking circuit is connected to the energy storage component; the on-state power taking circuit is used for taking out stable energy and storing the energy in the energy storage component when the switch component is in conduction; the off-state power taking circuit comprises a power converter and a rectifier bridge circuit consisting of a plurality of diodes D1, D2, D3, D4, D5 and D6; the switch component is used for switching on and off a load line connected with the switch device; the circuit can detect whether the switching device is connected to the zero line or not, and the energy storage component stores the energy acquired by the on-state power acquisition circuit and provides energy for the MCU chip.
Description
Technical Field
The invention belongs to the technical field of single-live wire switches, relates to a switching device compatible with zero-live wire or single-live wire access, and in particular relates to an optical switching device compatible with single-live wire or zero-live wire access and a detection circuit.
Background
Along with the continuous progress of science and technology and the improvement of the requirements of people on living standard, the application of intelligent household equipment is more and more popular, and as an indispensable part in the intelligent household equipment, the intelligent single-live wire switch is more and more widely applied, and the on-off of the intelligent household equipment can be controlled by receiving a control instruction through the intelligent single-live wire switch.
The invention provides a new technical scheme aiming at the application environment of a wireless intelligent switch, so that the wireless intelligent switch device can be installed under the condition of only a single live wire or only the live wire, thereby greatly providing the popularization rate of the intelligent switch and solving the trouble that a user needs to rewire when installing the intelligent wireless switch. Most of the intelligent switches on the market are terminal equipment at present, and network exchange experience is poor.
Disclosure of Invention
The invention aims to provide a switching device and a detection circuit which can be compatible with single live wire or zero live wire access, and aims to solve the technical problems that an intelligent switching device cannot be installed under the condition that only the zero wire and the live wire or only the live wire are arranged in a switching cassette, and whether the zero wire is accessed or not can be detected through the switching device.
In order to solve the technical problems, the invention provides a switching device compatible with single live wire or zero live wire access, which comprises an on-state power taking circuit, an off-state power taking circuit, an energy storage component and a switching component, wherein the live wire is connected with the on-state power taking circuit, the on-state power taking circuit is respectively connected with the switching component and the energy storage component, the load wire is connected with the switching component, the live wire, the load wire and the zero wire are respectively connected with the off-state power taking circuit, and the off-state power taking circuit is connected to the energy storage component;
the on-state power taking circuit is used for taking out stable energy and storing the energy in the energy storage component when the switch component is in conduction;
the off-state power taking circuit comprises a power converter and a rectifier bridge circuit consisting of 6 diodes D1, D2, D3, D4, D5 and D6;
the energy storage component is used for storing the energy acquired by the on-state power acquisition circuit and providing energy for the MCU chip;
the switch component is used for controlling the on-off of the load line;
the zero line detection circuit is composed of diodes D7 and D8, resistors R1, R2 and R3, a capacitor C1 and a switch tube Q1, wherein the diode D7 is used for finishing alternating current into direct current, and the resistors R1 and R2 are used for reducing the power consumption of the detection circuit; the resistor R3, the capacitor C1 and the diode D8 form a voltage stabilizing circuit.
The technical scheme of the invention is as follows:
preferably, the rectifier bridge circuit is composed of a plurality of diodes D1, D2, D3, D4, D5, D6, wherein the anode of the diode D3 is connected to the cathode of the diode D4 and the load line, the cathode of the diode D3 is connected to the cathode of the diode D5, the anode of the diode D5 is connected to the cathode of the diode D6 while being connected to the live wire, the anode of the diode D4 is connected to the anode of the diode D6, and the cathode of the diode D5 and the anode of the diode D6 are respectively connected to the power converter.
Preferably, the diode D7 is a rectifying diode, and the diode D2 is a zener diode.
Preferably, the switching means adds a set of load line outputs, only two diodes being added.
Preferably, the resistors R1, R2 are current limiting resistors.
Preferably, the on-state power taking circuit works, when the switch component is connected with the live wire, the load wire and the zero wire, the switch component is in a conducting state, the on-state power taking circuit takes energy, and the taken energy is stored in the energy storage component.
Preferably, the off-state power taking circuit works, the input end of the off-state power taking circuit is composed of a live wire and a load wire, the rectifier bridge circuit is used for finishing alternating current into direct current, and the filtering circuit is used for filtering the direct current.
Preferably, the live wire, the load wire and the zero wire are connected to the input end of the rectifier bridge circuit, and the rectifier bridge circuit formed by diodes D1, D2, D3, D4, D5 and D6 is used for rectifying the input alternating current into direct current.
Preferably, when the single live wire is connected, the off-state power taking circuit starts to work when the load wire is in the off-state; when the zero line is connected, the off-state power-taking circuit continuously works, and the energy extracted by the MCU chip is enough for the switching component to work in a routing network mode.
Preferably, the switching component is a relay or a MOS transistor.
Further, the method comprises the steps of,
the invention also provides a zero line access detection circuit:
the zero line detection circuit is composed of diodes D7 and D8, resistors R1, R2 and R3, a capacitor C1 and a switch tube Q1, wherein the diode D7 is used for finishing alternating current into direct current, and the resistors R1 and R2 are used for reducing system power consumption; the resistor R3, the capacitor C1 and the diode D8 form a voltage stabilizing circuit; the grid voltage of the switching tube Q1 is stabilized above the conduction threshold voltage of the Q1, the drain electrode of the switching tube Q1 is connected to the MCU chip, the source electrode is connected to a system ground signal, when the switching device is connected to a zero line, the grid voltage of the switching tube Q1 reaches the self conduction threshold value, the Q1 is conducted, the drain electrode voltage is pulled to the ground, and the MCU chip detects the existence of the zero line.
Preferably, the switching device does not detect the existence of the zero line, and the MCU chip works in a terminal device mode.
Preferably, when the switching device detects a zero line, the MCU chip operates in a routing device mode.
The invention has the beneficial effects that:
1. the circuit designed by the invention can be used for installing the switch device no matter under the condition of only a live wire or a zero wire and the live wire, thereby greatly providing the popularization rate of the intelligent switch; meanwhile, the trouble that a user needs to rewire when installing the switch device is also solved;
2. the switching device can automatically switch the working mode of the switch, can switch to a field Jing Kaiguan and bind the application mode of the switch;
3. the switching device is also provided with a zero line detection circuit, the MCU chip detects the existence of a zero line, and the intelligent module can work in terminal equipment and can reduce the power consumption of the MCU chip;
4. the MCU chip detects the existence of a zero line, and the intelligent module can work in a routing equipment mode and can perform more network work.
Drawings
FIG. 1 is a schematic block diagram of a circuit according to the present invention;
FIG. 2 is a schematic diagram of a second embodiment of the circuit of the present invention;
FIG. 3 is a circuit diagram of the present invention;
FIG. 4 is a schematic diagram of a zero line-free switching device according to the present invention;
fig. 5 shows a wiring diagram of the zero line switching device of the present invention.
Detailed Description
The invention will be further described with reference to examples and drawings, to which reference is made, but which are not intended to limit the scope of the invention.
Referring to fig. 1 and 2, in this embodiment 1, a switching device compatible with single live wire or zero live wire access according to the present invention includes an on-state power taking circuit, an off-state power taking circuit, an energy storage component and a switching component, where the live wire is connected to the on-state power taking circuit, the on-state power taking circuit is connected to the switching component and the energy storage component, the load wire is connected to the switching component, the live wire, the load wire and the zero wire are connected to the off-state power taking circuit, and the off-state power taking circuit is connected to the energy storage component;
the on-state power taking circuit is used for taking out stable energy and storing the energy in the energy storage component when the switch component is in conduction;
the off-state power taking circuit comprises a power converter and a rectifier bridge circuit consisting of 6 diodes D1, D2, D3, D4, D5 and D6;
the energy storage component is used for storing the energy acquired by the on-state power acquisition circuit and providing energy for the MCU chip;
the switch component is used for controlling the on-off of the load line;
the zero line detection circuit is composed of diodes D7 and D8, resistors R1, R2 and R3, a capacitor C1 and a switch tube Q1, wherein the diode D7 is used for finishing alternating current into direct current, and the resistors R1 and R2 are used for reducing system power consumption; the resistor R3, the capacitor C1 and the diode D8 form a voltage stabilizing circuit.
The rectifier bridge circuit comprises a plurality of diodes D1, D2, D3, D4, D5 and D6, wherein the anode of the diode D3 is connected to the cathode of the diode D4 and the load wire, the cathode of the diode D3 is connected to the cathode of the diode D5, the anode of the diode D5 is connected with the cathode of the diode D6 and is connected with the live wire, the anode of the diode D4 is connected with the anode of the diode D6, and the cathode of the diode D5 and the anode of the diode D6 are respectively connected with the power converter.
The diode D7 is a rectifying diode, and the diode D2 is a voltage stabilizing diode.
The diode D7 is a rectifying diode and a diode D2-bit voltage stabilizing diode.
The resistors R1 and R2 are current limiting resistors.
When the switch component is connected to the live wire, the load wire and the zero wire, the switch component is in a conducting state, the on-state power taking circuit takes energy, and the energy taken is stored in the energy storage component.
The off-state power taking circuit works, the input end of the off-state power taking circuit is composed of a live wire and a load wire, the rectifier bridge circuit is used for tidying alternating current into direct current, and the filtering circuit is used for filtering the direct current.
The live wire, the load wire and the zero wire are connected to the input end of the rectifier bridge circuit, and the rectifier bridge circuit formed by diodes D1, D2, D3, D4, D5 and D6 is used for rectifying input alternating current into direct current.
When the single live wire is connected, the off-state power-taking circuit starts to work when the load wire is in an off state; when the zero line is connected, the off-state power-taking circuit continuously works, and the energy extracted by the MCU chip is enough for the switching component to work in a routing network mode.
The switch component is a relay or an MOS tube.
Specific examples are as follows:
the off-state power taking circuit takes a flyback power supply as an example:
the first way is: when the switch device is connected with the live wire and the load wire, when the lamp is turned on, the switch component is closed, the on-state electricity taking circuit works, and the obtained electricity is stored in the energy storage component to provide energy for the MCU chip.
When the lamp is turned off, the switch component is disconnected, the off-state power taking circuit works, at the moment, the input of the off-state power taking circuit consists of a live wire and a load wire, the rectifier bridge circuit consists of diodes D1, D2, D3, D4, D5 and D6, the rectifier bridge circuit manages alternating current into direct current, and the filter circuit filters the direct current. Flyback converters, power management chips and switching tubes are responsible for energy conversion. The feedback circuit samples through the auxiliary winding of the flyback transformer, sends the sampling voltage to the power management chip, and the power management chip sends a driving signal to the switching tube through analyzing the sampling voltage to control the conversion of the primary of the flyback transformer to the secondary energy, so that the secondary obtains stable voltage. The secondary rectifying and filtering circuit is used for sorting the secondary electric energy of the flyback transformer, filtering the secondary electric energy into stable low-voltage electric energy and storing the stable low-voltage electric energy in the energy storage circuit.
The second way is: when the switching device is connected to the live wire, the load wire and the zero wire, the on-state power taking circuit works when the lamp is turned on, the obtained electric energy is stored in the energy storage component, and at the moment, the off-state power taking circuit consisting of the live wire and the zero wire also works.
When the lamp is turned off, the switch component is turned off, the off-state power taking circuit works, at the moment, the input of the off-state power taking circuit consists of a live wire and a load wire, the rectifier bridge is used for finishing alternating current into direct current, and then the direct current is filtered by the filter circuit. The transformer, the power management chip and the switching tube are responsible for energy conversion. And the feedback circuit is used for sampling through an auxiliary winding of the transformer and sending the sampled voltage to the power management chip, and the power management chip is used for sending a driving signal to the switching tube through analyzing the sampled voltage to control the conversion of primary energy to secondary energy of the transformer so that the secondary obtains stable voltage. The secondary arrangement filter circuit is used for arranging secondary electric energy of the transformer, filtering the secondary electric energy into stable low-voltage electric energy and storing the stable low-voltage electric energy in the energy storage circuit.
Third mode: when the switching device is connected to the live wire, the load wire and the zero wire, the off-state power-taking circuit works when the lamp is turned off.
When the lamp is turned off, the switch component is turned off, the off-state power taking circuit works, at the moment, the input of the off-state power taking circuit consists of a live wire and a load wire, the rectifier bridge is used for finishing alternating current into direct current, and then the direct current is filtered by the filter circuit. The transformer, the power management chip and the switching tube are responsible for energy conversion. And the feedback circuit is used for sampling through an auxiliary winding of the transformer and sending the sampled voltage to the power management chip, and the power management chip is used for sending a driving signal to the switching tube through analyzing the sampled voltage to control the conversion of primary energy to secondary energy of the transformer so that the secondary obtains stable voltage. The secondary arrangement filter circuit is used for arranging secondary electric energy of the transformer, filtering the secondary electric energy into stable low-voltage electric energy and storing the stable low-voltage electric energy in the energy storage circuit.
Example 2
The embodiment of the switching device compatible with single live wire or zero live wire is exemplified by a switching device compatible with 1-path zero live wire and single live wire:
as shown in fig. 4, when the user accesses the switching device to the cassette, if the cassette has only the live wire and the load wire at this time, the live wire end and the load wire end are accessed to the switching device, and at this time, the neutral wire detection circuit is not operated, and the MCU chip detects that the switching device is in the single live wire operation mode.
As shown in fig. 5, when a user accesses the switching device into the cassette, if the live wire, the zero wire and the load wire exist in the cassette at the same time, three wires can be simultaneously accessed to the terminals corresponding to the switching device, at the same time, the zero wire passes through the diode D7 to charge the zener diode D8, so that the switching tube Q1 is conducted, the drain electrode of the Q1 is pulled down, the MCU chip detects that the switching device is in the environment with the zero wire, at the same time, the switching device is switched to the routing working mode,
embodiment 3 also provides a zero line access detection circuit:
the zero line detection circuit is composed of diodes D7 and D8, resistors R1, R2 and R3, a capacitor C1 and a switch tube Q1, wherein the diode D7 is used for finishing alternating current into direct current, and the resistors R1 and R2 are used for reducing system power consumption; the resistor R3, the capacitor C1 and the diode D8 form a voltage stabilizing circuit; the grid voltage of the switching tube Q1 is stabilized above the conduction threshold voltage of the Q1, the drain electrode of the switching tube Q1 is connected to the MCU chip, the source electrode is connected to a system ground signal, when the switching device is connected to a zero line, the grid voltage of the switching tube Q1 reaches the self conduction threshold value, the Q1 is conducted, the drain electrode voltage is pulled to the ground, and the MCU chip detects the existence of the zero line.
And if the switching device does not detect the existence of the zero line, the MCU chip works in a terminal equipment mode.
When the switching device detects the zero line, the MCU chip works in a routing equipment mode.
The above embodiments are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereto, and any modification made on the basis of the technical scheme according to the technical idea of the present invention falls within the protection scope of the present invention.
Claims (12)
1. A switching device compatible with single-live wire or zero-live wire access comprises an on-state power taking circuit, an off-state power taking circuit, an energy storage component and a switching component, wherein the off-state power taking circuit comprises a flyback transformer,
when the live wire is connected to the on-state power-taking circuit,
the on-state power taking circuit is respectively connected with the switch component and the energy storage component, the load wire is connected with the switch component, the live wire, the load wire and the zero wire are respectively connected with the off-state power taking circuit, and the off-state power taking circuit is connected to the energy storage component;
the on-state power taking circuit is used for taking out stable energy and storing the energy in the energy storage component when the switch component is in conduction;
the off-state power taking circuit comprises a power converter and a rectifier bridge circuit consisting of diodes D1, D2, D3, D4, D5 and D6;
the energy storage component is used for storing the energy acquired by the on-state power acquisition circuit and providing energy for the MCU chip;
the switch component is used for controlling the on-off of the load line;
the zero line access detection circuit is composed of diodes D7 and D8, resistors R1, R2 and R3, a capacitor C1 and a switch tube Q1, wherein the diode D7 is used for finishing alternating current into direct current, and the resistors R1 and R2 are used for reducing the power consumption of the detection circuit; the resistor R3, the capacitor C1 and the diode D8 form a voltage stabilizing circuit.
2. A switching device compatible with single or neutral access according to claim 1, characterized in that,
the rectifier bridge circuit comprises a plurality of diodes D1, D2, D3, D4, D5 and D6, wherein the anode of the diode D3 is connected to the cathode of the diode D4 and the load wire, the cathode of the diode D3 is connected to the cathode of the diode D5, the anode of the diode D5 is connected with the cathode of the diode D6 and is connected with the live wire, the anode of the diode D4 is connected with the anode of the diode D6, and the cathode of the diode D5 and the anode of the diode D6 are respectively connected with the power converter.
3. A switching device compatible with single or neutral access according to claim 1, characterized in that,
the switching device adds a group of load line outputs, so that the rectifying circuit only needs to add two diodes.
4. A switching device compatible with single or neutral access according to claim 1, characterized in that,
the diode D7 is a rectifying diode, and the diode D2 is a voltage stabilizing diode.
5. A switching device compatible with single or neutral access according to claim 1, characterized in that,
the resistors R1 and R2 are current limiting resistors.
6. A switching device compatible with single or neutral access according to claim 1, characterized in that,
when the switch component is connected to the live wire, the load wire and the zero wire, the switch component is in a conducting state, the on-state power taking circuit takes energy, and the energy taken is stored in the energy storage component.
7. A switching device compatible with single or neutral access according to claim 1, characterized in that,
the off-state power taking circuit works, the input end of the off-state power taking circuit is composed of a live wire and a load wire, the rectifier bridge circuit is used for tidying alternating current into direct current, and the filtering circuit is used for filtering the direct current.
8. A switching device compatible with single or neutral access according to claim 1, characterized in that,
the live wire, the load wire and the zero wire are connected to the input end of the rectifier bridge circuit, and the rectifier bridge circuit formed by diodes D1, D2, D3, D4, D5 and D6 is used for rectifying input alternating current into direct current.
9. A switching device compatible with single or neutral access according to claim 1, characterized in that,
when the fire wire is connected in,
the off-state power-taking circuit starts to work when the load line is in an off state;
when the zero line is connected in,
the off-state power-taking circuit continuously works, and the energy extracted by the MCU chip is enough for the switching component to work in a routing network mode.
10. Switching device compatible with single or neutral access according to any of claims 1-9, characterized in that,
the zero line access detection circuit is composed of diodes D7 and D8, resistors R1, R2 and R3, a capacitor C1 and a switch tube Q1, wherein the diode D7 is used for finishing alternating current into direct current, and the resistors R1 and R2 are used for reducing system power consumption; the resistor R3, the capacitor C1 and the diode D8 form a voltage stabilizing circuit; the grid voltage of the switching tube Q1 is stabilized above the conduction threshold voltage of the Q1, the drain electrode of the switching tube Q1 is connected to the MCU chip, the source electrode is connected to a system ground signal, when the switching device is connected to a zero line, the grid voltage of the switching tube Q1 reaches the self conduction threshold value, the Q1 is conducted, the drain electrode voltage is pulled to the ground, and the MCU chip detects the existence of the zero line.
11. A single or neutral access compatible switching device as claimed in claim 10, wherein,
and if the switching device does not detect the existence of the zero line, the MCU chip works in a terminal equipment mode.
12. A single or neutral access compatible switching device as claimed in claim 10, wherein,
when the switching device detects the zero line, the MCU chip works in a routing equipment mode.
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| CN201710448606.5A CN107257600B (en) | 2017-06-14 | 2017-06-14 | Switching device compatible with single-live wire or zero-live wire access and detection circuit |
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| CN201710448606.5A CN107257600B (en) | 2017-06-14 | 2017-06-14 | Switching device compatible with single-live wire or zero-live wire access and detection circuit |
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| CN107257600B true CN107257600B (en) | 2023-08-11 |
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| CN108377597B (en) * | 2018-04-08 | 2024-06-04 | 深圳绿米联创科技有限公司 | Current regulating circuit and method of single-live wire switch and intelligent home system |
| CN108541123B (en) * | 2018-05-28 | 2019-05-10 | 福州松佳电子技术有限公司 | A kind of single live wire power getting switch |
| CN111293783B (en) * | 2018-12-10 | 2022-03-29 | 杭州萤石软件有限公司 | Intelligent switch and control method |
| CN109769331A (en) * | 2019-03-20 | 2019-05-17 | 深圳市宝泰光电科技有限公司 | A kind of three line compatible circuit of two line |
| CN110337162B (en) * | 2019-04-28 | 2021-09-21 | 天彩电子（深圳）有限公司 | Single-live-wire power taking system and method based on intelligent switch |
| CN111538268B (en) * | 2020-04-27 | 2023-06-27 | 罗洁洁 | Single-fire electricity taking intelligent switch, wireless control device and power supply control system |
| CN111629494B (en) * | 2020-04-29 | 2022-08-16 | 杭州涂鸦信息技术有限公司 | Intelligent switch and double-control switch |
| CN112770461B (en) * | 2020-12-25 | 2023-04-25 | 漳州立达信光电子科技有限公司 | Dimming circuit and dimming equipment |
| CN113991657B (en) * | 2021-11-02 | 2024-02-13 | 珠海格力电器股份有限公司 | Electrical appliance, electricity taking device of electrical appliance and electricity taking control method |
| CN114423131B (en) * | 2022-01-28 | 2023-03-24 | 广东浩博特科技有限公司 | Electronic switch without fire-fighting live wire and with fire-fighting centralized control function and system |
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